CWE-410 Class Incomplete

Insufficient Resource Pool

This vulnerability occurs when a system's resource pool is too small to handle maximum usage. Attackers can exploit this by making a high volume of requests, consuming all available resources and…

Definition

What is CWE-410?

This vulnerability occurs when a system's resource pool is too small to handle maximum usage. Attackers can exploit this by making a high volume of requests, consuming all available resources and blocking legitimate users.
At its core, this weakness creates a denial-of-service condition by exhausting a finite resource pool—like database connections, threads, or memory blocks. When an attacker floods the system with requests, the pool is quickly depleted, preventing normal users from accessing the service. This often manifests as connection timeouts, application crashes, or severe performance degradation during traffic spikes. To prevent this, developers must design resource pools that scale under peak load and implement safeguards like rate limiting, request throttling, and automatic resource recycling. Monitoring usage patterns and setting up alerts for abnormal consumption are also critical, as they allow teams to respond before a full outage occurs.
Real-world impact

Real-world CVEs caused by CWE-410

  • CVE-1999-1363

    Large number of locks on file exhausts the pool and causes crash.

  • CVE-2001-1340

    Product supports only one connection and does not disconnect a user who does not provide credentials.

  • CVE-2002-0406

    Large number of connections without providing credentials allows connection exhaustion.

How attackers exploit it

Step-by-step attacker path

  1. 1

    Identify a code path that handles untrusted input without validation.

  2. 2

    Craft a payload that exercises the unsafe behavior — injection, traversal, overflow, or logic abuse.

  3. 3

    Deliver the payload through a normal request and observe the application's reaction.

  4. 4

    Iterate until the response leaks data, executes attacker code, or escalates privileges.

Vulnerable code example

Vulnerable XML

In the following snippet from a Tomcat configuration file, a JDBC connection pool is defined with a maximum of 5 simultaneous connections (with a 60 second timeout). In this case, it may be trivial for an attacker to instigate a denial of service (DoS) by using up all of the available connections in the pool.

Vulnerable XML 
<Resource name="jdbc/exampledb"
  auth="Container"
  type="javax.sql.DataSource"
  removeAbandoned="true"
  removeAbandonedTimeout="30"
  maxActive="5"
  maxIdle="5"
  maxWait="60000"
  username="testuser"
  password="testpass"
  driverClassName="com.mysql.jdbc.Driver"
  url="jdbc:mysql://localhost/exampledb"/>
Secure code example

Secure pseudo

Secure pseudo 
// Validate, sanitize, or use a safe API before reaching the sink.
function handleRequest(input) {
  const safe = validateAndEscape(input);
  return executeWithGuards(safe);
}
What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Prevention checklist

How to prevent CWE-410

  • Architecture and Design Do not perform resource-intensive transactions for unauthenticated users and/or invalid requests.
  • Architecture and Design Consider implementing a velocity check mechanism which would detect abusive behavior.
  • Operation Consider load balancing as an option to handle heavy loads.
  • Implementation Make sure that resource handles are properly closed when no longer needed.
  • Architecture and Design Identify the system's resource intensive operations and consider protecting them from abuse (e.g. malicious automated script which runs the resources out).
Detection signals

How to detect CWE-410

SAST High

Run static analysis (SAST) on the codebase looking for the unsafe pattern in the data flow.

DAST Moderate

Run dynamic application security testing against the live endpoint.

Runtime Moderate

Watch runtime logs for unusual exception traces, malformed input, or authorization bypass attempts.

Code review Moderate

Code review: flag any new code that handles input from this surface without using the validated framework helpers.

Plexicus auto-fix

Plexicus auto-detects CWE-410 and opens a fix PR in under 60 seconds.

Codex Remedium scans every commit, identifies this exact weakness, and ships a reviewer-ready pull request with the patch. No tickets. No hand-offs.

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Frequently asked questions

Frequently asked questions

What is CWE-410?

This vulnerability occurs when a system's resource pool is too small to handle maximum usage. Attackers can exploit this by making a high volume of requests, consuming all available resources and blocking legitimate users.

How serious is CWE-410?

MITRE has not published a likelihood-of-exploit rating for this weakness. Treat it as medium-impact until your threat model proves otherwise.

What languages or platforms are affected by CWE-410?

MITRE has not specified affected platforms for this CWE — it can apply across most application stacks.

How can I prevent CWE-410?

Do not perform resource-intensive transactions for unauthenticated users and/or invalid requests. Consider implementing a velocity check mechanism which would detect abusive behavior.

How does Plexicus detect and fix CWE-410?

Plexicus's SAST engine matches the data-flow signature for CWE-410 on every commit. When a match is found, our Codex Remedium agent opens a fix PR with the corrected code, tests, and a one-line summary for the reviewer.

Where can I learn more about CWE-410?

MITRE publishes the canonical definition at https://cwe.mitre.org/data/definitions/410.html. You can also reference OWASP and NIST documentation for adjacent guidance.

Related weaknesses

Weaknesses related to CWE-410

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CWE-118 Sibling

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CWE-1229 Sibling

Creation of Emergent Resource

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CWE-1250 Sibling

Improper Preservation of Consistency Between Independent Representations of Shared State

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CWE-1329 Sibling

Reliance on Component That is Not Updateable

This vulnerability occurs when a product depends on a component that cannot be updated or patched to fix security flaws or critical bugs.

CWE-221 Sibling

Information Loss or Omission

This weakness occurs when an application fails to log critical security events or records them inaccurately, which can misguide security…

CWE-372 Sibling

Incomplete Internal State Distinction

This vulnerability occurs when an application fails to accurately track its own operational state. The system incorrectly assumes it's in…

CWE-400 Sibling

Uncontrolled Resource Consumption

This vulnerability occurs when an application fails to properly manage a finite resource, allowing an attacker to exhaust it and cause a…

CWE-404 Sibling

Improper Resource Shutdown or Release

This vulnerability occurs when a program fails to properly close or release a system resource—like a file handle, database connection, or…

Resources

Further reading

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